Table 1. Parameters critical to control in reef aquaria. | ||
Parameter: | Reef Aquaria Recommendation: | Typical Surface Ocean Value:1 |
Calcium | 380-450 ppm | 420 ppm |
Alkalinity | 2.5-4 meq/L 7-11 dKH 125-200 ppm CaCO[size=-2]3 equivalents | 2.5 meq/L 7 dKH 125 ppm CaCO[size=-2]3 equivalents |
Salinity | 35 ppt sg = 1.026 | 34-36 ppt sg = 1.025-1.027 |
Temperature | 76-83° F | Variable2 |
pH | 7.8-8.5 OK 8.1-8.3 is better | 8.0-8.3 (can be lower or higher in lagoons) |
Magnesium | 1250-1350 ppm | 1280 ppm |
Phosphate | < 0.03 ppm | 0.005 ppm |
Ammonia | <0.1 ppm | Variable (typically <0.1 ppm) |
Table 2. Other parameters in reef aquaria. | ||
Parameter: | Reef Aquaria Recommendation: | Typical Ocean Value:1 |
Silica | < 2 ppm, much lower if diatoms are a problem | <0.06 - 2.7 ppm |
Iodine | Control not recommended | 0.06 ppm total of all forms |
Nitrate | < 0.2 ppm | Variable (typically below 0.1 ppm) |
Nitrite | < 0.2 ppm typically | Variable (typically below 0.0001 ppm) |
Strontium | 5-15 ppm | 8 ppm |
ORP | Control not recommended | Variable |
Boron | < 10 ppm | 4.4 ppm |
Iron | Below Kit Detection Limits (additions OK) | 0.000006 ppm |
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